Physics Letters B (Nov 2015)
Lifetime measurements of the first 2+ states in 104,106Zr: Evolution of ground-state deformations
- F. Browne,
- A.M. Bruce,
- T. Sumikama,
- I. Nishizuka,
- S. Nishimura,
- P. Doornenbal,
- G. Lorusso,
- P.-A. Söderström,
- H. Watanabe,
- R. Daido,
- Z. Patel,
- S. Rice,
- L. Sinclair,
- J. Wu,
- Z.Y. Xu,
- A. Yagi,
- H. Baba,
- N. Chiga,
- R. Carroll,
- F. Didierjean,
- Y. Fang,
- N. Fukuda,
- G. Gey,
- E. Ideguchi,
- N. Inabe,
- T. Isobe,
- D. Kameda,
- I. Kojouharov,
- N. Kurz,
- T. Kubo,
- S. Lalkovski,
- Z. Li,
- R. Lozeva,
- H. Nishibata,
- A. Odahara,
- Zs. Podolyák,
- P.H. Regan,
- O.J. Roberts,
- H. Sakurai,
- H. Schaffner,
- G.S. Simpson,
- H. Suzuki,
- H. Takeda,
- M. Tanaka,
- J. Taprogge,
- V. Werner,
- O. Wieland
Affiliations
- F. Browne
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4GJ, United Kingdom
- A.M. Bruce
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4GJ, United Kingdom
- T. Sumikama
- Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan
- I. Nishizuka
- Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan
- S. Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- G. Lorusso
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- P.-A. Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- H. Watanabe
- IRCNPC, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
- R. Daido
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Z. Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- S. Rice
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- L. Sinclair
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- J. Wu
- Department of Physics, Peking University, Beijing 100871, China
- Z.Y. Xu
- Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- A. Yagi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- H. Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- N. Chiga
- Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan
- R. Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- F. Didierjean
- IPHC, CNRS/IN2P3, Université de Strasbourg, 67037 Strasbourg, France
- Y. Fang
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- N. Fukuda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- G. Gey
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble Cedex, France
- E. Ideguchi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- N. Inabe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- T. Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- D. Kameda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- I. Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- N. Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- T. Kubo
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- S. Lalkovski
- Department of Physics, University of Sofia, 1164 Sofia, Bulgaria
- Z. Li
- Department of Physics, Peking University, Beijing 100871, China
- R. Lozeva
- IPHC, CNRS/IN2P3, Université de Strasbourg, 67037 Strasbourg, France
- H. Nishibata
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- A. Odahara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Zs. Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- P.H. Regan
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- O.J. Roberts
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4GJ, United Kingdom
- H. Sakurai
- Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- H. Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- G.S. Simpson
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble Cedex, France
- H. Suzuki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- H. Takeda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- M. Tanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
- J. Taprogge
- Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
- V. Werner
- A.W. Wright Nuclear Structure Laboratory, Yale University, New Haven, CT 06520, USA
- O. Wieland
- INFN Sezione di Milano, I-20133 Milano, Italy
- DOI
- https://doi.org/10.1016/j.physletb.2015.09.043
- Journal volume & issue
-
Vol. 750,
no. C
pp. 448 – 452
Abstract
The first fast-timing measurements from nuclides produced via the in-flight fission mechanism are reported. The lifetimes of the first 2+ states in 104,106Zr nuclei have been measured via β-delayed γ-ray timing of stopped radioactive isotope beams. An improved precision for the lifetime of the 21+ state in 104Zr was obtained, τ(21+)=2.90−20+25 ns, as well as a first measurement of the 21+ state in 106Zr, τ(21+)=2.60−15+20 ns, with corresponding reduced transition probabilities of B(E2;21+→0g.s.+)=0.39(2) e2b2 and 0.31(1) e2b2, respectively. Comparisons of the extracted ground-state deformations, β2=0.39(1) (104Zr) and β2=0.36(1) (106Zr) with model calculations indicate a persistence of prolate deformation. The data show that 104Zr is the most deformed of the neutron-rich Zr isotopes measured so far.
